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5400 vs 7200 RPM IDE drives

DISCUSSION David U. 3 participants 3 messages Oct 8, 2002 – Oct 9, 2002 MD RAID

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David U.

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#0 lore raw

Hi friends,

I was just wondering what the most current opinions were with regard to 5400 vs 7200 RPM drives.

Also, have people been happy with the Western Digital 100gig Special Edition drives?

What are other people using?

fwiw, I'm planning on running three WD1000JB's. Two of them mirrored and the third as a backup until needed as a spare. This is for a remote colo so in the event a drive dies I need lots of time to be able to get a new drive in, so raid5 is out. (I can't only fit in three drives)

Thanks,
David U.

--
"Never doubt that a small group of thoughtful citizens can change the world. Indeed, it is the only thing that ever has." --Margaret Mead

#1 lore raw

hi ya

most of the disks that are dead and sitting on my desks are ibm deskstars ( 20,30,40 GB ) and the other batch is similarly sized WesternDigital cavalier(?)...

- have a couple WD 120GB disks w/ 8MB disk cache.. ( so far no problem with it )

and those disk failures are 10-20% disk failures at one company that tried to save a few $$$ by buying WDs...

ibm just screwed up their manufacturing/qa processes w/ the deskstars

( now i just buy seagate/maxtors in those sizes )

jury still out for me on the 8MB cache WD 120s

btw... add a cooling fan for each 7200rpm disk

c ya
alvin

-- i'd use 3 disks as raid5 ...
- when one disk dies... it continues in degraded mode... ( you can add the replacement disk ... and it will resync

- but you lose backup disks ( need another system for backups )

-- if using 2 disks as mirroring
- when one disk dies... it continues in degraded mode... ( you can add the replacement disk ... and it will resync

and you have a backup of it too

- i dont use "spare disks" .... i rather have a 2nd system that is mirror of the first set of "important data" ( usually warm swap w/ new ip# to retire the flaky/dying system w/ the warm-backup )

Quoted 31 lines · David U.

Hi friends,

I was just wondering what the most current opinions were with regard to 5400 vs 7200 RPM drives.

Also, have people been happy with the Western Digital 100gig Special Edition drives?

What are other people using?

fwiw, I'm planning on running three WD1000JB's. Two of them mirrored and the third as a backup until needed as a spare. This is for a remote colo so in the event a drive dies I need lots of time to be able to get a new drive in, so raid5 is out. (I can't only fit in three drives)

Thanks,
David U.

--
"Never doubt that a small group of thoughtful citizens can change the world. Indeed, it is the only thing that ever has." --Margaret Mead

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#2 lore raw
In reply to David U.
Quoted 9 lines · David U.

Hi friends,

I was just wondering what the most current opinions were with regard to 5400 vs 7200 RPM drives.

Also, have people been happy with the Western Digital 100gig Special Edition drives?

What are other people using?

I have two servers with 16 IBM 120gigs each, and they mostly work. One disk went boom the other day, but that's expected - I mean - one out of 32 drives in half a year isn't that bad

The choice between 5,4 and 7,2 is to be taken on behalf of the seek time needed. seek times on 5,4 drives are substantially slower...

roy

Signature · 6 lines
Roy Sigurd Karlsbakk, Datavaktmester
ProntoTV AS - http://www.pronto.tv/
Tel: +47 9801 3356

Computers are like air conditioners.
They stop working when you open Windows.